The chapter presents measurement results of air pollutant emissions from incineration of selected hazardous wastes in a full-scale rotary kiln equipped with afterburner and a wet installation for flue gas cleaning. This type of kiln is suitable for thermal disposal of many sorts of wastes, both solid and liquid. Four groups of waste were incinerated during the tests: coke tars, medical (hospital) and pharmaceutical wastes added to greased cleaning materials, a sawdust and used gloves, varnish and lubrication wastes, as well as waste rubber and resins. The study was performed in order to answer the question: is the process of burning the waste can be managed and controlled in an environmentally safe way. In addition, the efficiency of wet scrubber (powered sodium hydroxide), used for the cleaning of waste gases, was evaluated. The study included such substances as total dust, SO2, NOx, CO, phenol, HCl, HF, HCN, heavy metals, PCDD/PCDFs and B(a)P. English title: Pollutant emissions from incineration of hazardous waste in a rotary kiln.